August weather forecast
Sydney, Australia

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The landmarks of the city of Sydney, Australia
The landmarks of the city of Sydney, Australia

Weather in August

As August unfolds, Sydney starts to shake off the winter chill, setting the stage for the imminent arrival of spring. Evenings remain a bit nippy and demand warm clothing while afternoons grow progressively warmer. The city experiences its lowest rainfall during this month, with an amount confined to 80mm (3.15"). With reduced showers, Sydney starts to bask more in sunshine, welcoming the onset of blooming flowers. Indeed, August signals the commencement of a vibrant and colorful chapter in the Sydney climate.

Temperature

During August, the average high-temperature in Sydney is a still refreshing 17.8°C (64°F), maintaining a close resemblance to that of the preceding month. Sydney throughout August, records an average low-temperature of 9°C (48.2°F).

Humidity

With an average relative humidity of 49%, August is the least humid month in Sydney.

Rainfall

In Sydney, in August, it is raining for 10.4 days, with typically 80mm (3.15") of accumulated precipitation. In Sydney, during the entire year, the rain falls for 143.4 days and collects up to 1212mm (47.72") of precipitation.

Sea temperature

In August, the average sea temperature is 18.8°C (65.8°F).
Note: Swimming is not a pleasant activity for most when the water temperature is 18.8°C (65.8°F). As the water temperature drops from 21°C (69.8°F) to 15°C (59°F), breathing becomes more difficult to control.

Daylight

In Sydney, the average length of the day in August is 10h and 53min.
On the first day of August in Sydney, sunrise is at 6:47 am and sunset at 5:15 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 5:36 pm AEST.

Sunshine

The months with the most sunshine are August through October and December, with an average of 7.9h of sunshine.

UV index

In Sydney, Australia, the average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: In August, the maximum UV index of 4 suggests this advice:
Put precautions into practice - Guidance to elude sunburn is provided. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What is the temperature in August in Sydney?

August temperatures vary between a high-temperature of 17.8°C (64°F) and a low-temperature of 9°C (48.2°F).

What is the least humid month in Sydney?

With an average relative humidity of 49%, August is the least humid month in Sydney.

What is the average humidity in August in Sydney?

In August, the average relative humidity in Sydney, Australia, is 49%.

How many days does it rain in August in Sydney?

In Sydney, in August, it is raining for 10.4 days, with typically 80mm (3.15") of accumulated precipitation.

What is the sea temperature in August in Sydney?

In August, the average sea temperature in Sydney is 18.8°C (65.8°F). Swimming in 18.8°C (65.8°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

What is the average length of the day in August in Sydney?

The average day length in August in Sydney, Australia, is 10h and 53min.

When is the sunrise / sunset in August in Sydney?

In August, on the first day of the month, sunrise is at 6:47 am and sunset at 5:15 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 5:36 pm AEST.

What are the months with the most sunshine in Sydney?

The months with the most sunshine in Sydney, Australia, are August through October and December, with an average of 7.9h of sunshine.

How long on average sun shines in August in Sydney?

In Sydney, Australia, the average sunshine duration in August is 7.9h.

How high is the UV index in August in Sydney?

In August, the average daily maximum UV index in Sydney, Australia, is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in August
Sydney, Australia

Average temperature in August - Sydney, Australia
  • Average high temperature in August: 17.8°C

The warmest month (with the highest average high temperature) is January (25.9°C).
The month with the lowest average high temperature is July (16.3°C).

  • Average low temperature in August: 9°C

The month with the highest average low temperature is February (18.8°C).
The coldest month (with the lowest average low temperature) is July (8.1°C).

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Average humidity in August
Sydney, Australia

Average humidity in August - Sydney, Australia
  • Average humidity in August: 49%

The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (49%).

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Average rainfall in August
Sydney, Australia

Average rainfall in August - Sydney, Australia
  • Average rainfall in August: 79.8mm

The wettest month (with the highest rainfall) is June (131.9mm).
The driest month (with the least rainfall) is September (68.3mm).

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Average rainfall days in August
Sydney, Australia

Average rainfall days in August - Sydney, Australia
  • Average rainfall days in August: 10.4 days

The month with the highest number of rainy days is March (13.6 days).
The month with the least rainy days is August (10.4 days).

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Average sea temperature in August
Sydney, Australia

Average sea temperature in August - Sydney, Australia
  • Average sea temperature in August: 18.8°C

The best month for swimming (with the highest average sea temperature) is February (23.7°C).
The coldest month (with the lowest average sea temperature) is September (18.6°C).

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Average daylight in August /
Average sunshine in August
Sydney, Australia

Average daylight in August / Average sunshine in August - Sydney, Australia
  • Average daylight in August: 10h and 5min

The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).

  • Average sunshine in August: 7h and 5min

The months with the most sunshine are August, September, October and December (Average sunshine: 7h and 54min).
The month with the least sunshine is June (Average sunshine: 5h and 54min).

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Average UV index in August
Sydney, Australia

Average UV index in August - Sydney, Australia
  • Average UV index in August: 4

The months with the highest UV index are January and December (UV index 12).
The month with the lowest UV index is June (UV index 2).

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Sydney, Australia

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